XRFrame: getViewerPose() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The getViewerPose() method, a member of the XRFrame interface, returns a XRViewerPose object which describes the viewer's pose (position and orientation) relative to the specified reference space.

See the getPose() method for a way to calculate a pose that represents the difference between two spaces.

Syntax

js
getViewerPose(referenceSpace)

Parameters

referenceSpace

An XRReferenceSpace object specifying the space to use as the reference point or base for the computation of the viewer's current pose.

Return value

A XRViewerPose describing the viewer's position and orientation relative to the specified reference space.

Exceptions

InvalidStateError DOMException

Thrown if getViewerPose() was not called within the context of a callback to a session's XRSession.requestAnimationFrame().

Examples

In this callback function for requestAnimationFrame(), the XRViewerPose describing the viewer's viewpoint on the world is obtained by calling getViewerPose() on the XRFrame passed into the callback.

js
viewerPose = xrFrame.getViewerPose(xrReferenceSpace);

if (viewerPose) {
  /* render the pose's views */
}

To see a complete example, take a look at Movement, orientation, and motion.

Specifications

Specification
WebXR Device API
# dom-xrframe-getviewerpose

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
getViewerPose()
Experimental

Legend

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Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.